I wake up, feeling strange

My head was hurting a lot. While regaining consciousness I heard a familiar voice calling me, "Tim, Tim, wake up".

When I woke up, I see an exact copy of myself.

"Tim are you okay?", Said my double.

"Yes, I think, but who are you? You look exactly like me...", I asked, nervously, when I noticed my voice was very feminine. "What the hell is happening???"

I got up from were I was and I noticed something bouncing off my chest. I moved my hands instantly and I looked down. Two enormous breasts were hanging from my chest. My hands were more delicate, and ny hair was long, falling behind my shoulders. I recognized the white bikini I was wearing, the same mom was wearing. What is happening here? Why I'm on my mom's body?

When I thought of that, and I didn't feel my penis, I took my hands between my legs and I could not believe it was empty there. "I can't believe it, am I really mom? Wait, is that you on my body mom?".

"Yes", answered my mother from inside my body. "Tim are you there?"

"Yes but... What happened?"

"It seems our heads collided and for some reason we swapped bodies".